Wayne, the 6100 is about 3200gph, and pulses. It runs about $500. I have one of those in my 155g and felt I needed to add a 6080 (2100gph) as well. I may add a second 6080 in the future. Other currents come from a 1" seaswirl and a couple of powerheads. More is better, me thinks.
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Brad
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